[Elecraft] K2 and HW-101?

Wed Jan 16 08:11:00 2002

In a message dated 1/16/02 1:35:32 AM Eastern Standard Time, 
[email protected] writes:

> [email protected] wrote:
>  > 
>  > In a message dated 1/15/02 8:37:39 PM Eastern Standard Time,
>  > [email protected] writes:
>  > 
>  > > The K2 should provide more than enough
>  > >  voltage swing across it to drive a pair of 6146's to full output.
>  > 
>  > 12.5 watts across 50 ohms is only about 25 volts. 6146s need more than 
> that.
>  
>  Looking at my ancient Bill Orr handbook, I suppose about 50-75v, depending 
> on
>  the plate voltage.  Well, you could just use a 1-4 toroidal transformer 
> between
>  the input and a 200 ohm swamping resistor.  

That might work, if the toroidal transformer can drive the capacitive load of 
the tubes over the frequency range. Neutralizing would be disabled and a TR 
system installed.

At about this point it makes sense to remove the final compartment and the 
related components from the HW-101 carcass and install on a much smaller 
chassis.

73 de Jim, N2EY